heat of passion vs ill humor

heat of passion

noun
  • An outburst of anger that leads one to commit a criminal act, and is itself influenced by preceding events that might cause a reasonable person to lose self control. 

ill humor

noun
  • bad temper 

  • irritability or surliness 

How often have the words heat of passion and ill humor occurred in a corpus of books? (source: Google Ngram Viewer )